LS055I01-MP-V1: 5.5-Inch a-Si TFT LCD Module, 1080×1920 Resolution, 16.7M Colors, MIPI Interface, 29-Pin

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LS055I01-MP-V1: 5.5-Inch a-Si TFT LCD Module, 1080×1920 Resolution, 16.7M Colors, MIPI Interface, 29-Pin

Product Subtitle / Keywords

5.5 Inch Display, 1080(RGB)×1920 Resolution, Transmissive a-Si TFT-LCD, MIPI DSI Interface (4 Data Lanes + 1 Clock Lane), COG+FPC+B/L, 16.7M Colors, 29-Pin, -10°C~60°C Operating Temperature, -20°C~70°C Storage Temperature

1. Executive Summary & Product Positioning

The LS055I01-MP-V1, developed by Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 5.5-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.

This product specification (Revision 1.0, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), general description, physical features, absolute maximum ratings, and complete MIPI DSI interface pinout (29-pin). It delivers a high-definition resolution of 1080(RGB)×1920 (Full HD) with 16.7M-color display capability.

The document provides the core parameters necessary for system integration into embedded display applications requiring a high-resolution display with a standard high-speed serial interface. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility.

2. Detailed Product Overview & Architecture

  • Core Technology: Transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, which is composed of a TFT-LCD panel, a driver circuit and a backlight unit.
  • Display Mode: Transmissive type.
  • Display Format: Graphic 1080(RGB)×1920 pixel array (Full HD).
  • Display Characteristics: Capable of displaying up to 16.7 million colors.
  • Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit).
  • Interface Type: MIPI DSI (4 data lanes + 1 clock lane as per pin description).
  • Connector Pin Count: 29-Pin (from pin description and physical drawing).
  • Approval Status: ☑ Approved Product Specification only (as per signature block).

3. Exhaustive Technical Specifications

3.1 Mechanical & Physical Specifications

Panel Size (Diagonal) 5.5 inch
Number of dots / Resolution 1080(RGB) × 1920 pixel
Display Type 5.5" TFT, a-Si TFT, Transmissive
Module Type COG+FPC+B/L
Display Colors 16.7M

Critical Mechanical Design Notes (from outline dimension drawing):

  • The physical drawing indicates a scale of 2.5/1 with detailed dimensions.
  • General tolerance: ±0.2 mm for dimensions with one decimal; ±0.3 mm for dimensions without decimal.
  • Drawing date: 2020.08.02.
  • Unit of measurement: mm (implied).
  • Drawing scale: Not to scale (NTS) for the overall diagram, with detailed callouts at 2.5/1 scale.
  • Pin count: 29 pins as shown in the interface specification and physical drawing.

3.2 Electrical & Interface Specifications

3.2.1 Absolute Maximum Ratings

The specification includes an "Absolute Maximum Ratings" section (Section 5) which provides the safe operating limits for the module. Key parameters from this section include the operating and storage temperature ranges.

Item Symbol Min Max Unit
Operating temperature Topr -10 60 °C
Storage temperature Tstg -20 70 °C

3.2.2 Pin Description (29-pin FPC)

The module uses a 29-pin interface with a MIPI DSI configuration that includes 3 data lanes (D0, D1, D2) and 1 clock lane as shown in the specification. The full pin assignments are as follows:

PIN NO. Symbol I/O Description Function Group
1 NC - No connection -
2 LEDK P Cathode pin of backlight. Backlight
3 NC - No connection -
4 LEDA P Anode pin of backlight. Backlight
5 NC - No connection -
6 GND P Ground Power/Ground
7 MIPI_D0N I/O MIPI DSI differential data pair (Data lane 0) — Negative MIPI Interface
8 MIPI_D0P I/O MIPI DSI differential data pair (Data lane 0) — Positive MIPI Interface
9 GND P Ground Power/Ground
10 MIPI_D1N I MIPI DSI differential data pair (Data lane 1) — Negative MIPI Interface
11 MIPI_D1P I MIPI DSI differential data pair (Data lane 1) — Positive MIPI Interface
12 GND P Ground Power/Ground
13 MIPI_CLN I MIPI DSI differential clock pair — Negative MIPI Interface
14 MIPI_CLP I MIPI DSI differential clock pair — Positive MIPI Interface
15 GND P Ground Power/Ground
16 MIPI_D2N I MIPI DSI differential data pair (Data lane 2) — Negative MIPI Interface
17 MIPI_D2P I MIPI DSI differential data pair (Data lane 2) — Positive MIPI Interface
18 GND P Ground Power/Ground
19 GND P Ground Power/Ground
20 GND P Ground Power/Ground
21 GND P Ground Power/Ground
22 LEDA P Anode pin of backlight Backlight
23 LEDK P Cathode pin of backlight Backlight
24 GND P Ground Power/Ground
25 VCI P Power supply voltage for analog circuits Power/Ground
26 TE O Tearing effect output Control
27 GND P Ground Power/Ground
28 IOVCC P Power supply voltage for I/O interface Power/Ground
29 RESET I Reset signal Control
30 NC - No connection -
31 NC - No connection -

Interface Summary:

  • MIPI DSI Interface: Uses 3 data lanes (D0, D1, D2) and 1 clock lane (CL) for high-speed serial data transmission. This implies the interface supports at least 3 data lanes, with potential for a 4th lane (D3) being available through the NC pins.
  • Backlight: Dedicated LEDA (Anode, Pins 4 and 22) and LEDK (Cathode, Pins 2 and 23) pins.
  • Power: VCI (Pin 25) for analog, IOVCC (Pin 28) for I/O, GND (Pins 6, 9, 12, 15, 18, 19, 20, 21, 24, 27) for ground.
  • Control: RESET (Pin 29) for hardware reset, TE (Pin 26) for tearing effect output.
  • Unused Pins: Pins 1, 3, 5, 30, 31 are NC (no connection) — leave floating.

3.2.3 Backlight Circuit Characteristics

Based on the pin description, the backlight uses a dual-anode and dual-cathode configuration with LEDA on Pins 4 and 22, and LEDK on Pins 2 and 23. This suggests a backlight circuit with multiple LED strings.

3.3 Version Record

Revision 1.0, dated 2020.08.02.

4. Application Guidelines & Critical Notes

Intended Use

  • Smartphones and mobile devices
  • Portable media players and handheld gaming consoles
  • Industrial control panels and human-machine interfaces (HMIs)
  • Any application requiring a full-HD resolution display with a standard MIPI interface

Critical Design Considerations

  1. Interface (3-lane MIPI DSI): This module uses a MIPI DSI interface with 3 data lanes and 1 clock lane. This is sufficient for 1080×1920 resolution at standard refresh rates. The host controller should be capable of configuring 3-lane MIPI operation.
  2. Power Supply: Provide stable VCI (for analog circuits) and IOVCC (for I/O interface) power supplies. The backlight requires a constant-current LED driver connected to LEDA (Pins 4 and 22) and LEDK (Pins 2 and 23). Note the dual anode and cathode pins which may indicate multiple LED strings.
  3. Mechanical Integration: Module pin count: 29 signals with an additional 2 NC pins. The physical drawing details specific mechanical dimensions — refer to the full document for exact measurements.
  4. Temperature Limits: Operating Temperature: -10°C to +60°C. Storage Temperature: -20°C to +70°C.
  5. ESD Protection: Observe standard ESD precautions during handling and assembly.
  6. Reset Sequence: Ensure the RESET pin (Pin 29) is held low for a sufficient period during power-up to guarantee proper initialization.
  7. Tearing Effect (TE) Signal: Pin 26 provides a TE output for synchronizing the MPU to frame writing. If not used, leave this pin open.

Handling & Compliance

  • The module is subject to standard ESD precautions during handling and assembly.
  • The module contains fragile glass and a 29-pin FPC – handle with care.
  • Avoid bending the FPC sharply, especially near the connector interface.
  • Do not attempt to disassemble or process the LCD module.
  • NC terminals should be open. Do not connect anything.
  • If the logic circuit power is off, do not apply the input signals.

5. Conclusion & Design-In Support

The LS055I01-MP-V1 specification details a standard 5.5-inch full-HD display module with a 3-lane MIPI DSI interface — an excellent choice for applications requiring a high-resolution display with a standard high-speed serial interface.

Key Strengths

  • Full-HD Resolution (1080×1920): Provides sharp and detailed image quality for a 5.5-inch display.
  • MIPI DSI Interface (3 Data Lanes): Sufficient bandwidth for full-HD video content.
  • High Color Depth: 16.7M colors (24-bit true color) provides excellent color reproduction.
  • Standard 5.5-inch Size: Suitable for a wide range of embedded and mobile applications.
  • Wide Operating Temperature Range: -10°C to +60°C for operation.

Main Design Focus

  • The critical design task is properly configuring the MIPI DSI interface on the host processor for 3-lane operation and ensuring reliable high-speed data transfer for 1080×1920 resolution.
  • Supporting requirements: Provide stable VCI and IOVCC power. Provide a constant-current backlight driver for the dual LEDA/LEDK pins. Mechanical integration — verify the 29-pin FPC connector.

This module is an excellent choice for mobile devices, portable applications, and any embedded system requiring a full-HD display with a standard MIPI interface.